Power-shovel.



, 12); p I XW- Nb. 826,051. PATENTED JULY 17, 1906. 0. J. OLSON, DEOD.C. OLSON, ADMINISTRATRIX. POWER SHOVEL. APPLICATION FILED MAR.31, 1905.

2 SHEETS-SHEET 1.

WITNESSES; LVVE/V TOR.

Wed/u) Mm ATTORNEY.

PATENTED JULY 17; 1906.

0. J. OLSON, DBOD. 0. OLSON. ADMINISTEATRIX.

POWER SHOVEL. APPLIOATION FILED MAR. 31, 1905.

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LVVEIVTOR.

lV/TNESSES:

mfgmz A TTORNL I.

of? W% UNITED STATES OSCAR J.

PATENT oFEIoE.

OLSON, DULUTH, MINNESOTA; CARRIE OLSON ADMINIS- TRATRIX OF SAID OSCAR J.OLSON, DECEASED.

POWER-SHOVEL.

humanl r7, 1906'.

Application filed larch 31,1905. Serial No- 253,080-

I To all whom it may concern.-

Be it known that I, Oscar. J. OLSON, a citizen of the United States,residing at Duluth, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Power-Shovels; andI do hereby declare the following to be a full, clear, and exactdescription of the invention,

such as will enable others sln'lled in the art to which it appertains tomake and use the same.

M invention relates to ower-shovels, and has or its object the. prnotion of a simple and convenient power shovel apparatus adapted for,ditchdigging or for various otherp oses.

It consists, in combination with a suitable support, of a derrickmounted thereon, a shovel-pole loosely secured to said derrick andprovided at its foot with a shovel, means for operating said derrick,and means for operatin said shovel. I

It a so consists of certain other constructions, combinations, andarrangements of project into the aperture on said plate.

- struction parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a perspective view. ofmy said invention, partly roken away. Fig. 2 is a side elevation, artlyin section and partly broken away, 0 a modified form of my saidinvention.

- In said drawings, 1 is a railway-track laid in short sections adaptedto be alternately taken up and removed. to the rear as theshovel-supporting car retreats. Sup orted upon sai track is a car 2,.upon wllich is mounted a derrick-base 3, slotted, as at 3",'to form acable-passage. Upon said base is an apertured base-p1ate'4, upon whichis erected a horizontally-oscillating derrick-mast 5, in which is formedin any suitable manner a passa connecting with the aperture in said pate. The foot of said mast is secured in position against horizontalmovement in any suitable manner, as by forming a reduced end (not shown)thereon, adapted to The upper end of the mast is secured in position byany suitable guys or braces, as bythe braces or glllilys 6, 7, 8, and 9,which in the conustrated are provided at their upper ends with aperturedstraps, as 10,-

adapted to loosely engage a, pin 11,extend- I do 'not desire to belimited to the specific keeping themast in a vertical position, butpermitting it to oscillate horizontally. Said bracesor guys 6 and7 inthe construction illustrated extend oppositel from said mast and attheir lower ends are raced from said car by any suitable braces, asStand 7, respectively. At the junction of said guys with said braces arepreferably mounted thereon in any suitable manner boxes or cribs X,(shown in broken lines in Fig. 1,) adapt ed to receive stone or otherweights, in which further sup orted in any suitable manner by underl ingblocks (not shown) laid upon the groun or instead or in addition saidguys and braces may be en ported fromthe ground by jack-screws Y, 0 anysuitable construction, at the sides of the track. The lower ends of thebraces or guys 8 and 9 are preferably secured to the frame of the car,near the rear end thereof,in an suitable manner; but since said mast'maybraced or guye'd in various ways or b various means within the spiritand scope o m invention I do not de-- sue to be limited to t 'e exactmeans for'that purpose which I have illustrated; Pivotally secured tosaid mastinan suitable manner, as at 12, is a derrickpole or ji 13supported at its upper end by a chain or'cable 14, secured at one end toeither said pole or mast, as preferably at 14, and rove through asuitable number of sheaves or pulleys, as 15, some of which are securedto sald pole and one or'more of a cleat on said mast, as-indicated inbroken lines at 14", Fig. 1, and in solid lines at 14 ing from the upperend of saidmast, thus 5 ,case said gu s, braces, and boxes when themachine is in operation will preferably be Fig. 2, by which cable thevertical angle of sald derrick-pole may be adjusted; but since saidcable ma be connected said pole or mast or with said pole and some otheranchorage/than said mast in a variety of ways within the spirit andscope of my mvention means .or manner shown for suchfp ose. Secured tosaid mast, intermediate 0 the ends thereof and preferably in a rigidmannor, as by bolts 16, is a of'any suitable construction. Cab es 17 and18, respectivel are secured in any suitable manner to sai derrick-pole,respectivel on 'deors reader 16 opposite sides thereof, as at "17, anare to deflect the course of said cables 17 and 18,

- derrick-arm throu thus providing a greater leverage upon said saidcables. A further result is to transmit through said guide a directswinging strain upon said mast, thus avoiding some of the strain whichwould otherwise be imposed upon the pivot-pin of said derrick-arm. It isobvious that by slacking toward sai collar 22.

one of said cables 17 or 18 and drawing taut the other of them saidderrick-arm may be swung to one side or the other, as desired. U on saidderrick-pole is secured a clip 21 to w 'ch a collar 22 is pivotallsecured by a universal joint of any suitab e construction, as 23. Ashovel-pole 24 is loosely encircled by said collar and 18 provided atits lower end with a scoo or shovel 25, referabl'y directed car. To theorward end of said shovel is secured a crotch-line 26, to which isattached a sheave or pulley 27, through which pulley is rove a cable 28,which is secured at one end to a suitable anchora e, as at 28*, to saidcar, and intermediate 0 said pulley and its opposite end is carriedbetween or partly around suitable guide-wheels, as at 28 28, and 28 andsaid opposite end thereof is secured to a winding-drum or windlass ofany suitable construction, as to the drum 29, which may be operated byany suitable means, as by said engine 20. The en ine and saidwinding-drums are of we l-known construction and in common use and arenot thought necessary to be herein described; nor do I desire to limitmyself to any specific kind of cable-operatin means, since said cablesmight be operated by any one or more of a great variety of means.Secured to said. shovel is another cable 30, which is carried over aguide-pulley 30 on the upper end of said derrick-pole and thence over aguide-pulley 30 on said mast and thence under a guide-pulley 30 andsecured at its opposite end to a Windlass of any suitable structure, as31, operated by any suitable means, as b said engine. It will be obviousthat by s acking both said cables 28 and 30 said shovel will drop bygravit said shovel-pole slipping'through the coll ar 22. Now by windingup the cable 28, leaving the cable 30 slack, the shovel will be drawntoward the car along the bottom of the ditch or against the bank u onwhich the car stands, thus securin a loa of earth or ore. As soon as theshove is filled both cables 28 and 30,

are wound up; which operate to lift the shovel, the shovel-pole slip ingthrough said After the shovel reaches a certain heightthat is to say,the hei ht of the pulleys 28 --said cable 28 .may e slowly unwound topermit the shovel to be raised hi her,

dlVhen the shovel has reached the desired height, the derrick pole orjib may be swun arc of which said universal joint 23 is the radialcenter and causing said shovel to dis charge its load. If desired, saidderrick may be mounted upon a scow or other suitable support, (notshown, but the construction of which would occur to one skilled in theart and, if desired, said shovel may, as shown in Fig. 2, be turnedaround, so as to fill while movin away from the derrick-support, inwhich latter-case the closed end of the scoop or shovel will be providedwith an outwardly-opening latched door 25, having a latch-releasing cordor wire 32, secured to the latch 33 thereof and carried, over anysuitable purchase-point or uide-wheel 34, and thence to said car or 0ter sup ort, so that said door may be released an the load of earth droped through the doorway to the dump. n such case also the cable woulddraw the scoop in load-receiving direction as well as to dumpinposition, the cable 28- only operating to raw back the shovel to thestarting position and subsequently in cooperation with'the cable 30 tolift the load. Such modification will, it is thought, be ,obvious to anyone skilled in the art and need not be illustrated or described moreparticularly. In said modified form I also prefer to furnish holddownmeans for holdin said shovel-pole in lowered position until t e shovelor scoo is filled. Gravity is usually sufficient for t 's purpose ineither form of the device; but such additional means, which I will nowdescribe, I believe is desirable in such modified form, at least, andmay also, if desired, within the scope of my invention be added to theconstruction shown in Fig. 1. Said holddown means comprise a cable orequivalent flexible means 35, secured at one end to the foot of saidpole by said scoop or in any other manner and thence led upwardly andpartly around a guide-wheel 36, mounted on sa d collar, and thence toand several times around a drum 37, preferably mounted on said jib, andthence to and partly around a guidewheel 38, mounted on said collar, andthenceupwardly and secured at its opposite end to said pole in anysuitable manner, as at 38*. Said drum may be controlled in any suitablemanner; but I prefer to secure a concentric brake-wheel 39 thereto andto bend over said wheel a brake-strap 40, secured at one end, as at 40,to said jib and at its opposite end to the .toe of a bell-crank lever41, which is pivoted at its heel to said jib, as at but not to be tippedby the cable 30.

43. To the opposite end of said lever I secure a haulin -line 44,leading toward the car, by which sai lever may be rocked to set saidbrake-strap in operation.

Having now described my invention, wha I claim, and desire to secure byLetters Patent, is-

1. The combination with a suitable support of a jib, a collar mounted onsaid jib by a universal joint, a pole directed. loosely through saidcollar, a shovel carried by said pole, means for lowering and raisingsaid pole and means for swingin said pole.

2. The combination wit a suitable support of a jib carried thereby, acollar secured to said jib by a universaljoint, a pole directed looselythrou h said collar, guides mounted on said 001 ar, flexible meansengagin said guides and secured to said pole and a apted to control themovement of said pole throu h said collar, means mounted on said jib anengaging said flexible means intermediate of its ends and adapted togovern the movement of said flexible means, a shovel carried by saidpole, means for drawing said shovel in digging engagement with theearth, and means for swingin said shovel into load-releasing position,su stantially as described.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

OSCAR J. OLSON.

Witnesses:

JAMES T. WATSON, WELLINGTON M. BLEWETT

